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An AGN with an Ionized Gas Outflow in a Massive Quiescent Galaxy in a Protocluster at z = 3.09

Kubo, Mariko and Umehata, Hideki and Matsuda, Yuichi and Kajisawa, Masaru and Steidel, Charles C. and Yamada, Toru and Tanaka, Ichi and Hatsukade, Bunyo and Tamura, Yoichi and Nakanishi, Kouichiro and Kohno, Kotaro and Lee, Kianhong and Matsuda, Keiichi and Ao, Yiping and Nagao, Tohru and Yun, Min S. (2022) An AGN with an Ionized Gas Outflow in a Massive Quiescent Galaxy in a Protocluster at z = 3.09. Astrophysical Journal, 935 (2). p. 89. ISSN 0004-637X. doi:10.3847/1538-4357/ac7f2d.

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We report the detection of an ionized gas outflow from an X-ray active galactic nucleus hosted in a massive quiescent galaxy in a protocluster at z = 3.09 (J221737.29+001823.4). It is a type-2 QSO with broad (W_80 > 1000 km s^(−1)) and strong (log(L[OIII]/erg s^(−1)) ≈ 43.4) [O III]λλ 4959,5007 emission lines detected by slit spectroscopy in three-position angles using Multi-Object Infra-Red Camera and Spectrograph (MOIRCS) on the Subaru telescope and the Multi-Object Spectrometer For Infra-Red Exploration (MOSFIRE) on the Keck-I telescope. In the all slit directions, [O III] emission is extended to ∼15 physical kpc and indicates a powerful outflow spreading over the host galaxy. The inferred ionized gas mass outflow rate is 22 ± 3 M_⊙ yr^(−1). Although it is a radio source, according to the line diagnostics using Hβ, [O II], and [O III], photoionization by the central QSO is likely the dominant ionization mechanism rather than shocks caused by radio jets. On the other hand, the spectral energy distribution of the host galaxy is well characterized as a quiescent galaxy that has shut down star formation several hundred Myr ago. Our results suggest a scenario that QSOs are powered after the shutdown of the star formation and help complete the quenching of massive quiescent galaxies at high redshift.

Item Type:Article
Related URLs:
URLURL TypeDescription Article
Kubo, Mariko0000-0002-7598-5292
Umehata, Hideki0000-0003-1937-0573
Matsuda, Yuichi0000-0003-1747-2891
Kajisawa, Masaru0000-0002-1732-6387
Steidel, Charles C.0000-0002-4834-7260
Tanaka, Ichi0000-0002-4937-4738
Hatsukade, Bunyo0000-0001-6469-8725
Tamura, Yoichi0000-0003-4807-8117
Nakanishi, Kouichiro0000-0002-6939-0372
Kohno, Kotaro0000-0002-4052-2394
Lee, Kianhong0000-0003-4814-0101
Ao, Yiping0000-0003-3139-2724
Nagao, Tohru0000-0002-7402-5441
Yun, Min S.0000-0001-7095-7543
Additional Information:This work has been supported by JSPS KAKENHI Grant Nos. 20K14530, 21H044902 (MK), 17K14252, 20H01953 (HU), 19H00697, 20H01949 (TN), 17H06130 (YT and KK). This work has been also supported by a US National Science Foundation (NSF) grant AST-2009278 (CCS). This work has been also supported by NAOJ ALMA Scientific Research Grant Numbers 2018-09B (YT) The spectroscopic data were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The observations were carried out within the framework of the Subaru-Keck/Subaru-Gemini time exchange program, which is operated by the National Astronomical Observatory of Japan. The Ks -band image was collected with nuMOIRCS at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. We are honored and grateful for the opportunity of observing the Universe from Maunakea, which has the cultural, historical, and natural significance in Hawaii. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2013.1.00162.S, ADS/JAO.ALMA#2016.1.00580.S, ADS/JAO.ALMA #2017.1.01332.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. The F814W-band image is based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Science Institute. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Group:Astronomy Department
Funding AgencyGrant Number
MEXT ∣ Japan Society for the Promotion of Science20K14530
MEXT ∣ Japan Society for the Promotion of Science21H044902
Japan Society for the Promotion of Science (JSPS)17K14252
Japan Society for the Promotion of Science (JSPS)20H01953
Japan Society for the Promotion of Science (JSPS)19H00697
Japan Society for the Promotion of Science (JSPS)20H01949
Japan Society for the Promotion of Science (JSPS)17H06130
National Astronomical Observatory of Japan2018-09B
W. M. Keck ObservatoryUNSPECIFIED
Subaru-Keck/Subaru-Gemini time exchange programUNSPECIFIED
Subaru TelescopeUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20220908-183409314
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:116629
Deposited By: Donna Wrublewski
Deposited On:07 Sep 2022 22:27
Last Modified:08 Sep 2022 18:34

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